Inner sole



Aug. 27, 1929. p FRY-E l,726,019

INNER SOLE Filed May 19, 1928 A W r Patented Ang. 2.7, 1929.

ROBERT r. FRYE, or MARLBORO, MASSACHUSETTS.

INNEB SOLE.

Application filed May 19,

The invention relates to inner soles for welted shoes, and it has forits object to produce a desirably ineXpensive inner sole, havingsufcient strength and stability to hold the upper in the form impartedto it by the lasting operation.

Other objec'ts appear description of my improved the statement of theadvantages thereof.

Of the accompanying drawings forming a part of this specification,-

Figure 1 is a bottom View of an inner sole embodying the invention,looking toward the side from which the inseam stitch-receiving ribprojects, portions of the two flexible strips constituting the rib andthe anchoring apron hereinafter described, being shown by 'full lines,and other portions bydotted lines.

Figur-e 2 is a section on line ure 1.

Figure 3 is an enlargement of a portion of Figure 2.

Figures 4: and 5 are fragmentary perspectiVe views, each showing on amuch enlarged scale a portion of the inner sole body, and portions ofthe two fiexible strips, said strips being in approximately the formsthey assume and the positions they occupy in relation to the insole bodybefore the completion of the rib, Figure 5 showing a slightmodification. I I

Figure 6 is an enlarged fragmentary sectional view, showing the fiexiblestrips in substantially the positions they occupy during the stitchir'goperation.

The same reference characters indicate the same parts in all of thefigures.

The insole body 12 maybeof any suitable material, or combination ofmaterials, and may include an inner layer of leather, and an outer layerof some cheaper material, such as leather board.

The body is provided with aninseam stitch-receiving rib, spaced inwardlyfrom the margin of the body, as usual in insoles for welted shoes. Withthe body and rib is associated an anchoring apron secured to the body atthe inner side of the rib and constituting a feature of my improvement.

The rib is laminated and the anchorng apron is integral with one of thelayers of the rib. The rib and apron are composed of two fieXiblestrips, preferably of teXtile fabrc, such as cotton duck, and each stripmay be a length of woven tape having sel- 2-2 of Figfrom the followinginner sole and' 1928. Serial No. %79,173.

Vage edges, or it may be cut from sheet material and have a raw edge oredges, one set of the crossing threads being preferably parallel'withthe longitudinal edges of the strip, so that the strip diii'ers from onewhich is cut on the bias.

One of the strips which I call the outer i strip, is foldedlongitudinally to' form; two Contacting layers 13 and 14 of thelaminated rib, and a necl( 15 connecting said layers, and secured by arow of outer stitches 16 to the body, the stitches being spaced from themargin of the body and extending substantially parallel thcrewith. Thelayer 13 is the outer layer, and the layer 14 an intermediate layer ofthe rib. The other strip which I call the inner strip, is bent orpartially folded longitudinally, so that its cross section is angular,the inner strip including an anchoring apron 17, which is secured to thebody 1:2 at the inner side of the rib, and a fiap 18, which Contactswith the intermediate rib layer l l, and constitutes the inner layer ofthe rib, the latter being therefo re composed of three plies or layers.

The outer edge portion of the anchoring apron 17 is secured to the bodyby a row of inner stitches 19, extending parallel with the outerstitches 16 and spaced inwardly therefrom. The parallel-rows of stitches16 and 19 may be 'ormed simultaneously by a suitable two-needlesewing-machine, preferably of the lock-stitch type, the two strips being"guided simultaneously to the body, and located thereon substantially asindicated by Figure 6, so that the two strips are Secured by a singleoperation. If desired, the bend or neck connecting the portions 17 and18 of the inner strip, may project slightly into the path of the needleemployed in forming the stitches 16, so that said stitches secure theinner portion of the anchoring apron 17 to the body, as shown by Figure5.

The rib layers are united to each other, so that they form a rib ofsufiicient thickness projecting from one side of the body. This union iseflected preferably by providing the outer strip which includes the riblayers 13 and 14-, with an adhesive coatng 20, indicated by heavy blacklines in Figures 3, 4, 5 and 6, and by providing the inner strip with asimilar coating 21.

The strips may be prepared by spreading on one side of each strip anysuitable fluid or semi-fluid material, which is adherent to the strip,and allowing the material to dry,

the nature of the material being such that it is adapted to be renderedsubstantially nonsticky by drying, and to be softened and renderedSticky or tacky by hoat. A suitable material is known to the trade asgem coating or guttasiad and nay contain gutta percha, or some otherform of rubber.

After the stitching operation, the prevously dried and hardened coatingsare rendered soft and Sticky by'heat, and while the coatings are in thiscondition, the strips are acted on by a lip-setting machine whichpressesthe Sticky coatings on the lip layers 13, 14 and 18 together, andthe Sticky coating on the apron 17 against the body, so that the liplayers are caused to firmly adhere to each other and form a suitablystili lip, and the apron is caused to rmly adhere to the body.

The layers 13, 14 and 18 are narrower than the apron 17, so that thelayers may be tenporarily displaced and lie substantially fiat on thebody, as shown by Figure 6, and on a sewing-nachine bed plate to exposethe stitch-receiving portions of 'the two strips, during the stitchingoperation.

The displaced strips are so located on the body 12 while being stitched,that the edge of the apron, which receives the stitches 19 is exposed,to receive said stitches and the neck portion of the outer strip isexposcd to receive the stitches 16, the rb layers 1 1 and 18 partly, butnot entirely overlapping the apron.

The inner strip is folded when first applied to the body, the apronhearing;` on the body, and the layer 18 on the apron, and the outerstrip is substantially flat when first applied to the body, its rb layer1 1 overlapping the layer 18, all as shown by Figure 6. The bed orthroat plate of the sewingmachine may, therefore, be flat, as usual, itbeing nnnecessary to provide a bed plate which is specially fornied orrecessed to accoinmodate the material being stitched.

The inner sole made as above described, possesses the followingconbination of advantages over any others of which I am aware:

The rb is secured to the body not only by the stitches 16, but also bythe anchoring apron 17, the latter being so firmly Secured to the bodythat it may be much narrower than the Width of the body, as shown byFigure 1, a marked saving of material being thus efiected.

The inner row of stitches 19 is ont of the path of the needle used informing the inseain stitches and cannot be cut thereby. The marginalportion of the under side of the body from which the rib projects, andon which the shoe upper bears, is eXposed, there being no fabricthereon.

The inner row of stitches 19 so confines the outer ed -e portion of theanchoring apron it is not liable to be pulled away from the body duringthe inseam stitching operation.

The two strips constituting 'the rib and the anchoring` apron areSecured to the body by two parallel rows of stitches simultaneouslyt'ormed, so that the'time required by the stitching operation is reducedto a minimum.

I claim:

A reinforced insole of the character stated, comprising a body, atlexible outer strip folded to form an enter and an intermediate rblayer and a neck connecting said layers, outer stitches extcndingapproximately parallel with and spaced from the margin of the body andsecnring the neck thereto, a flexible inner strip including an apronsuperinposed on the body, and an .inner rb layer standing at an angle tothe apron, and inner stitches eX- tending arallel with and spacedinwardly from the outer stitches and securing the inner edge portion ofthe inner strip to the body, means for secnring the outer andintermediate rib layers to each other and the inner layer to theintermediate layer, the apron being wider than the several rb layers, sothat the intermediate and inner layer may be temporarily locatedparallel with each other and with the body to expose the stitchreceivingportions of the two strips, and permit the snultaneous :formation of theouter and inner stitches.

In testimony whereof I have afiixed'iny signature.

ROBERT P. FRYE.

